Glossary
204 JOYA™ TOUCH A6
RF
Radio Frequency.
Scanner
An electronic device used to scan barcode symbols and produce a
digitized pattern that corresponds to the bars and spaces of the
symbol. Its three main components are:
• Light source (laser or photoelectric cell) - illuminates a barcode.
• Photodetector - registers the difference in reflected light (more
light reflected from spaces).
• Signal conditioning circuit - transforms optical detector output
into a digitized bar pattern.
SDK
Software Development Kit.
Symbol
A scannable unit that encodes data within the conventions of a
certain symbology, usually including start/stop characters, quiet
zones, data characters and check characters.
Symbology
The structural rules and conventions for representing data within a
particular barcode type (e.g. UPC/EAN, Code 39, PDF417, etc.).
USB
Universal Serial Bus. Type of serial bus that allows peripheral devices
(disks, modems, printers, digitizers, data gloves, etc.) to be easily
connected to a computer. A “plug-and-play” interface, it allows a
device to be added without an adapter card and without rebooting
the computer (the latter is known as hot-plugging). The USB
standard, developed by several major computer and
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